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Semenov [28]
4 years ago
9

How long has Earth been a planet?

Physics
2 answers:
Ket [755]4 years ago
8 0

The geologic record has led scientists to believe that the Earth is about 4.6 billion years old.


Of these 4.6 billion years, life has only existed for a very small portion of that.


Hope this helps!!

Helga [31]4 years ago
8 0

Earth been a planet for 4.54 billion years

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Ben franklin showed that 1 teaspoon of oil would cover about 0.50 acre of still water. if you know that 1.0 x 104m2 = 2.47 acres
Dmitry_Shevchenko [17]

To solve for the thickness of the latter of oil, we can simply divide the volume by the total surface area:

Thickness = Volume / Surface Area

We are both given the volume and the surface area, all we have to do now is to convert the units in like terms so that we can cancel those out.

Surface Area = 0.50 acres (1.0 x 10^4 m^2 / 2.47 acres)

Surface Area = 2,024.29 m^2

Further converting this into cm:

Surface Area = 2,024.29 m^2 (100 cm / m)^2

Surface Area = 20,242,914.98 cm^2

 

Therefore the thickness is:

Thickness = 5.0 cm^3 / 20,242,914.98 cm^2

Thickness = 2.47 x 10^-7 cm

or

<span>Thickness = 2.47 x 10^-9 m = 2.47 nm = 24.7 A</span>

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4 years ago
17. If a good is a luxury, what type of response will it cause?
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6 0
3 years ago
A force of 100N was necessary to lift a rock. A total of 150J of work was done. How far was the rock lifted?
Gwar [14]

Answer:

A total of 150 joules of work was done

Explanation:

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3 years ago
What is force derived from
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Force can also be described intuitively as a push or a pull. ... It is measured in the SI unit of newtons and represented by the symbol F. The original form of Newton's second law states that the net force acting upon an object is equal to the rate at which its momentum changes with time.

Explanation:

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4 years ago
Calculate the force of gravity on a 1–kilogram box located at a point 1.3 × 107 meters from the center of Earth if the force on
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Since you already gave us the weight of the 2.5-kg box,
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Look at the formula for the gravitational force:

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If 'G', 'm₁' (mass of the Earth), and 'R' (distance from the Earth's center)
don't change, then the Force is proportional to  m₂ ... mass of the box,
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Cross-multiply:  (6.1 N) (1 kg)  =  (F) (2.5 kg)

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